TEA7092TQ Просмотр технического описания (PDF) - STMicroelectronics

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TEA7092TQ

TELEPHONE ANALOG FRONT END

STMicroelectronics 

TEA7092

DESCRIPTION

The TEA7092 is a Telephone set Analog Front End

(TAFE) interface intended for use in conjunction

with a microcontroller.

In this configurationthe TEA7092 provides a world-

wide telephone set with loudhearing and melody

ringer on loudspeaker. An handsfree telephone set

can be built by adding the TEA7540 handsfree

controller.

The simple interface with a +5V main supply allows

to use the TEA7092 in terminal like Answering

machine, FAX and cordless base station.

Repertory dialer (memory on MCU) and various

features (HOLD, Tone/Pulse, Flash, Mute, adjust-

able Ringer and Loudspeaker levels...) are pro-

grammable by the MCU through the serial bus

interface.

PIN CONNECTIONS

The MCU through the serial bus interface.

The concept using TAFE and Microcontroller is

called BICHIP approach.

BENEFITS

The benefits of this concept are :

- Saving of external components.

- Easy upgrade of the features (memories, LCD

driver, Answering machine, FAX, Cordless ...).

- Replacement of co nfiguration switches

(PABX/Public, Tone/Pulse) and potentiometers

for loudspeaker and ringer control, by EEPROM

settings.

- Reliability and cost improvements.

VLS

1

VMC

2

VL

3

VRE FL

4

LSIN

5

LS S O F

6

DTMF1

7

VRMC

8

OSC

9

RI/VI

10

RESET

11

33

ILL

32

AGND

31

S LP

30

VS

29

IRE F

28

SO FTL

27

TS OFT

26

VCC

25

VREF

24

MIC2

23

MIC1

2/24

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